Venomous funnel-web tarantula - Venomous funnel-web tarantula The venomous funnel-web tarantulas of the family Hexanthelidae are notorious for the inclusion of the Sydney funnel-web spider (Atrax robustus). This is probably one of the three most dangerous spiders on our planet. It has a powerful neurotoxin that, for some reason not easily apparent, is more toxic in the male. Unfortunately males are aggressive and tend to wander in search of females. They are often found in swimming pools where they have fallen while so engaged. They also show up in garages and yards in suburban Sydney. Until the antivenin was produced the bite of a male Sydney funnel-web spider was usually fatal. Even the bite of a female or juvenile can be serious. Like the related diplurid spiders, the hexanthelids have.
Funnel-web tarantula - Funnel-web tarantula Funnel-web tarantulas (family Dipluridae) resemble other mygalomorphs in having downward stabbing fangs and two pairs of booklungs. However members of this family often build rather messy funnel-webs and have very long spinnerets. Some build silk-lined burrows instead of webs. Most of the species are medium to small sized spiders. The highly venomous genus Atrax used to be placed in this family, but is now in the Hexathelidae. The common genus in the United States is Euagrus, which builds its webs under stones in wet canyons. It is fairly abundant in such areas as the Chiracahua Mountains of Arizona. Diplurids can be very common in banks and road cuts in the tropics, such as in Trinidad. It is not know how venomous these species are,.
Araneomorph funnel-web spider - Araneomorph funnel-web spider Araneomorph funnel-web spiders space for image Scientific classification Kingdom: Animalia Phylum: Arthropoda Class: Arachnida Order: Araneae Suborder Araneomorphae Family Agelenidae Genera Agelena Agelenopsis Hololena Tegenaria The araneomorph funnel-web spiders of the family Agelenidae include the common grass spiders of the genus Agelenopsis, as well as the mildly venomous European hobo spider, Tegenaria agestis, which has been introduced into the Pacific Northwest of the United States. (Note: The araneomorph funnel-web spider not to be confused with the funnel-web tarantula and the venomous funnel-web tarantula, both of which are mygalomorphs. The venomous funnel-web tarantulas include the infamous Sydney funnel-web spider.) The family contains nearly 500 species in over 40 genera worldwide. Among other genera are Hololena and Agelena. The last named genus includes some fascinating semi-social.
Sydney funnel-web spider - Sydney funnel-web spider Sydney funnel-web spider Scientific classification Kingdom: Animalia Phylum: Arthropoda Class: Arachnida Order: Araneae Family: Hexathelidae Genus: Atrax Species: robustus Binomial name Atrax robustus The Sydney funnel-web spider, also called a funnel-web tarantula, (Atrax robustus) is a strong candidate for the most dangerous spider in the whole world. Examination of bite records seems to indicate that wandering males have almost always caused the fatal bites. The female venom seems to be only about a sixth as potent to humans as that of the male. It has been said that until the development of antivenin no one survived the bite of an adult male, however this may be misleading as we have no way of being sure that all bites were reported. The bite of a.
Spider - Suborder Mesothelae Liphistiidae (primitive burrowing spiders) Suborder Mygalomorphae Atypidae (atypical tarantula) Antrodiaetidae (folding trapdoor spider) Mecicobothriidae (dwarf tarantulas) Hexathelidae (venomous funnel-web tarantula) Dipluridae (funnel-web tarantula) Cyrtaucheniidae (wafer trapdoor spider) Ctenizidae (trapdoor spider) Theraphosidae (tarantula) Suborder Araneomorphae Hypochilidae (lampshade spider) Filistatidae (crevice weaver) Sicariidae (recluse spider) Scytodidae (spitting spider) Leptonetidae (leptonetid spider) Pholcidae (daddy long-legs spider) Plectreuridae (plectreurid spider) Diguetidae (coneweb spider) Caponiidae (two-eyed spider) Segestriidae (tube-dwelling spider) Dysderidae (woodlouse hunter spider) Oonopidae (oonopid spider) Palpimanidae (palp-footed spider) Mimetidae (pirate spider) Eresidae (velvet spider) Oecobiidae (including Urocteidae) (wall and six-exit tent spider) Hersiliiidae (tree trunk spider) Deinopidae (ogre-faced spider) Uloboridae (cribellate orb spider, sector.
Brazilian Wandering Spider - regarded by some as the most dangerous spider in the world. It is highly venomous and not reluctant to attack people who appear threatening to it. However, recent studies indicate that it only injects venom in about one third of its bites and may only inject a small amount in another third. Thus the effects of the bites from this spider can range from only a couple of pin pricks to a full blown envenomation. The Sydney funnel-web spider apparently injects venom in every bite and may thus in effect be more dangerous..
Tarantula - Tarantula The word tarantula applies to two very different kinds of spiders. The spider that originally got this name is neither particularly large, particularly hairy, nor particularly venomous. Its scientific name is Lycosa tarantula, which makes it one of the wolf spiders. Its name comes from that of Taranto, a town in Southern Italy. The bite of this spider was once believed to cause a fatal condition called tarantism. The cure for the disease was believed to involve wild dancing of a kind that has come to be called the tarantella. Actually, the bite of this kind of spider is not even particularly painful, let alone life-threatening. There appears to have been an entirely different kind of spider in the fields around Taranto that caused fairly.
Dipluridae - a family of spiders belonging to the suborder of Mygalomorphae. Also known as Funnel Web Tarantulas, they are characterized by not having a rastellum (closely spaced parallel ridges) on each of their Chelicerae. Their carapace (upper shell of the part of the spider forward of its abdomen) is characterized by the head region not being higher than the thoracic region. They have a thoracic groove that is a circular pit. Their anterior spinnerets (silk-extruding organs) are very much shorter than their posterior spinnerets have three segments of about equal length..
Hobo spider - is not a member of the wolf spiders. Instead, it is a member of the family Agelenidae. Members of this family construct a funnel web, and typically lurk in the narrow end of the funnel, waiting for an insect to touch the outer part of their web..
Grass spider - of cotton. The grass spiders are members of the Genus Agelenopsis. They weave sheet webs that have a funnel shelter on one edge. The web is not sticky, but these spiders make up for that shortcoming by running very rapidly. They may be recognized by the arrangement of their eight eyes into three rows. The top row has two eyes, the middle row has four eyes, and the bottom row has two eyes (spaced wider than the ones on the top row). They also have two prominent hind spinnerettes, and somewhat indistinct bands on their legs..
Ground spider - The main exception to this rule is found in the ant-mimicking genus Micaria. Another characteristic is an indentation in the endites (paired mouthparts anterior and lateral to the labium, or lip). All ground spiders lack a prey-capture web and generally run prey down on the surface. At present, no ground spiders are known to be seriously venomous to humans. Very few people even notice these nearly worldwide reddish, brown, gray, striped or black spiders..
USS Arnold J. Isbell (DD-869) - she finally reached Yokosuka, Japan. There, the ship joined TF 77 for operations in the area between Hong Kong and Japan. She stopped in the Philippines before returning via Midway Island and Pearl Harbor, to San Diego where she arrived in March 1957. The warship had a brief availability period and then took part in a fleet training exercise. She later operated with the Navy's first nuclear-powered submarine, Nautilus (SSN-571). Arnold J. Isbell also visited Portland, Oregon, for that city's Rose Festival celebration. An 18-day nonstop voyage from San Diego to Brisbane, Australia, initiated the destroyer's ninth Far Eastern cruise. She made stops at the Admiralty Islands, Guam, the Philippines, Hong Kong, Taiwan, Okinawa, and Japan before returning to California in June 1958. The destroyer received an overhaul at Mare Island.
American house spider - is fairly likely to escape notice since it tends to build its tangled web in secluded locations. Its behavior on its web is quiet and efficient, so it generally does not draw attention to itself. There are several species of this genus, Achaearania. Their coloration consists generally in patterns of shades of brown, and they are rather dull in appearance, all of which makes it more easy for them to slip into the background. They are not known to bite people with any high degree of frequency, and their venom is not known to be dangerous to human beings. Their bodies are generally around a quarter of an inch long. Many species of American house spider share a body shape and size that makes them similar to widow spiders. The widow.
Brown recluse spider - recluse spider The brown recluse spider is a venomous spider of the family Sicariidae and the genus and species Loxosceles reclusa. It is usually between 1/4 to 3/4 inch (6.4-19.1mm) but may grow larger. It is brown and usually has markings on the dorsal side of its thorax, with a black line coming from it that looks like a violin with the neck of the violin pointing to the rear of the spider resulting in the nickname "fiddleback spider". Coloring varies from light tan to brown and the violin marking may not be visible. Recluse spiders, which also include Loxosceles rufescens, build irregular webs that frequently include a shelter consisting of disorderly threads. Unlike most web weavers, they leave these webs at night to hunt. People get bitten when they unintentionally.
Snake - are legless reptiles, some of which have a venomous bite which they use to kill their prey before eating it. Other snakes kill their prey by constriction, for example strangulation. Snakes are closely related to lizards, which share the order Squamata. There are also several species of legless lizard which superficially resemble snakes, but are not otherwise related to them. Although they may be venomous and have a bad reputation, snakes do not prey on humans. Most snakes will attack a human being only if startled or injured. If you look where you are walking and make plenty of noise, a snake will get out of your way rather than waiting for you to step on it. In many areas, most snakes are non-venomous or have venom that is not harmful.
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Orb-weaver spider - discovered. Common genera include Araneus, Argiope, Metepiera, Neoscona, Larinia and many others. Generally, orb-weaving spiders are three-clawed builders of flat webs with sticky spiral capture silk. The web has always been thought of as an engineering marvel. It is build by the spider starting with a line floated on the wind to another surface. The spider secures the line and than drops another line from the center, making a "Y". The rest of the scaffolding follows with the radii of non-sticky silk being constructed before the final spiral of sticky capture silk. The third claw is used the walk on the non-sticky part of the web. Characteristically the prey insect that blunders into the sticky lines is stunned by a quick bite and then wrapped in silk. If the prey is.
Owl - the Sibley-Ahlquist taxonomy. Owls are far-sighted, and are unable to clearly see anything within a few inches of their eyes. However, their vision, particularly in low light, is excellent. Many owls can also hunt by sound in total darkness. the facial disc helps to funnel the sound of rodents to their ears, which are placed assymetrically to allow better directional location. Owls are traditionally associated with wisdom and with the goddess Athena, although crows, rooks and many other common birds are more intelligent. In Japanese culture, the bird is a symbol of death and seeing one is considered a bad omen. Owls powerful clawed feet and sharp beak let them tear their prey to pieces before eating. Their muffled wings and dull feathers allow them to fly almost silently and unseen..
Wilderness first aid - body systems such as brain, kidney, liver, gastric tract. Unconsciousness for more than two hours usually leads to permanent disability. Cramps There are two basic causes of cramping. One is inadequate oxygenation of muscle, and the other is lack of water or salt. Cramps from poor oxygenation can be improved by rapid deep breathing, and stretching the muscle. Cramps from lack of salt and water can be treated by stretching the muscle, drinking water and eating salt. Pounding on the muscle can increase soreness. What happens in a cramp is that lactic acid builds up because of normal anaerobic muscle metabolism. When the muscle burns sugar without enough oxygen, it makes lactic acid. The lactic acid finally becomes concentrated-enough to trigger the contraction of the muscle. When the muscle lacks salt,.
KnowledgeWeb Project - KnowledgeWeb Project The KnowledgeWeb Project is a learning web site about knowledge envisioned and supervised by James Burke and the James Burke Institute for Innovation in Education. It is a non-profit, all volunteer project. The mission of the site is to present knowledge in a highly interconnected, holistic way. The goal is not only to inform about the scientists, artists, innovators and explorers of history but also to find the connections between them and impact they have had on modern life. Initially the Knowledge Web will have 2200 entries linked over 16,000 ways. Later it will grow to include a theoretically unlimited amount of information. In later phases data visualization technologies will allow users visual interaction with the contents of the site. The project is looking for volunteers (volunteers@k-web.org or http://www.burkeweb.org/)..
